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Commit b8802df0 authored by Jack Pham's avatar Jack Pham
Browse files

usb: pd: Notify USB controller every time Rp changes 



Allow USB controller to update its self-powered and bMaxPower
status whenever Rp changes dynamically. The source has a
responsiblity to reset the USB data connection in case Rp changes
to cause the sink to change its status, so make DWC3 driver
re-query for this each time it gets a connect done event.

Change-Id: If3b3ddc353d88599d70580c95175806f14e42096
Signed-off-by: default avatarJack Pham <jackp@codeaurora.org>
parent d488c17c

drivers/usb/dwc3/dwc3-msm.c

+11 −0
Original line number Diff line number Diff line
@@ -1785,6 +1785,7 @@ static void dwc3_msm_notify_event(struct dwc3 *dwc, unsigned int event, 
{

	struct dwc3_msm *mdwc = dev_get_drvdata(dwc->dev->parent);

	struct dwc3_event_buffer *evt;

	union extcon_property_value val;

	u32 reg;

	int i;
@@ -1855,6 +1856,16 @@ static void dwc3_msm_notify_event(struct dwc3 *dwc, unsigned int event, 
					PWR_EVNT_LPM_OUT_L1_MASK, 1);



		atomic_set(&dwc->in_lpm, 0);



		if (mdwc->extcon &&

			!extcon_get_property(mdwc->extcon[mdwc->ext_idx].edev,

					EXTCON_USB,

					EXTCON_PROP_USB_TYPEC_MED_HIGH_CURRENT,

					&val))

			dwc->gadget.is_selfpowered = val.intval;

		else

			dwc->gadget.is_selfpowered = 0;



		break;

	case DWC3_CONTROLLER_NOTIFY_OTG_EVENT:

		dev_dbg(mdwc->dev, "DWC3_CONTROLLER_NOTIFY_OTG_EVENT received\n");

drivers/usb/pd/policy_engine.c

+7 −0
Original line number Diff line number Diff line
@@ -3537,6 +3537,8 @@ static inline const char *src_current(enum power_supply_typec_mode typec_mode) 
static int usbpd_process_typec_mode(struct usbpd *pd,

	enum power_supply_typec_mode typec_mode)

{

	union extcon_property_value eval;



	switch (typec_mode) {

	/* Disconnect */

	case POWER_SUPPLY_TYPEC_NONE:
@@ -3575,6 +3577,11 @@ static int usbpd_process_typec_mode(struct usbpd *pd, 
		}



		pd->current_pr = PR_SINK;



		eval.intval = typec_mode > POWER_SUPPLY_TYPEC_SOURCE_DEFAULT ?

				1 : 0;

		extcon_set_property(pd->extcon, EXTCON_USB,

				EXTCON_PROP_USB_TYPEC_MED_HIGH_CURRENT, eval);

		break;



	/* Source states */